S5 (a1): prop viability — lineups, injury wire, date navigation

- lineupService: statsapi hydrate=lineups (live shape verified) →
  CONFIRMED (batting slot) / NOT_IN (team posted without the player) /
  PROJECTED (not posted). 10-min cache, pure parser, injectable.
- NOT_IN visibly KILLS the grade on the slate: struck through + NOT IN
  LINEUP chip, parlay/book actions suppressed. The locked ledger read is
  untouched — honesty is showing the read is dead, not deleting it.
- injuryService: ESPN injuries feed → OUT/GTD/PROB chips (unknown status
  → no chip, never invented). Chips on slate strips via ViabilityChips.
- Date navigation on the Slate: YESTERDAY (results surface — finals +
  THE SETTLE panel of that date's settled reads w/ outcome + CLV chips,
  via new ?date= filter on /api/ledger/model) / TODAY / TOMORROW
  (schedule until lines post). Odds/grades/pitcher layers are TODAY's
  and never fake other dates; 60s poll only refreshes today.
- Routes /api/schedule/:sport/lineups + /injuries + Next proxies.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/routes/schedule.js

@@ -49,6 +49,38 @@ router.get('/:sport/pitchers', async (req, res) => {
   }
 });
 
+// Session 64 (A1-S5) — MLB lineup confirmation. { byPlayer, postedTeams };
+// consumers resolve CONFIRMED / NOT_IN / PROJECTED via the posted-team rule.
+router.get('/:sport/lineups', async (req, res) => {
+  const sport = String(req.params.sport || '').toLowerCase();
+  if (sport !== 'mlb') return res.set(MISSION_HEADER).json({ sport, byPlayer: {}, postedTeams: [] });
+  const date = req.query.date || scheduleService.todayET();
+  try {
+    const { fetchLineups } = require('../services/lineupService');
+    const parsed = await fetchLineups(date);
+    res.set('Cache-Control', 'public, max-age=300');
+    return res.set(MISSION_HEADER).json({ sport, date, ...parsed });
+  } catch (err) {
+    console.error('[schedule/lineups]', err.message);
+    return res.set(MISSION_HEADER).json({ sport, date, byPlayer: {}, postedTeams: [] });
+  }
+});
+
+// Session 64 (A1-S5) — the injury wire (ESPN feed): { byPlayer: { key:
+// { status: OUT|GTD|PROB, detail, team } } }. Accurate chips, no cascades yet.
+router.get('/:sport/injuries', async (req, res) => {
+  const sport = String(req.params.sport || '').toLowerCase();
+  try {
+    const { fetchInjuries } = require('../services/injuryService');
+    const byPlayer = await fetchInjuries(sport);
+    res.set('Cache-Control', 'public, max-age=600');
+    return res.set(MISSION_HEADER).json({ sport, byPlayer });
+  } catch (err) {
+    console.error('[schedule/injuries]', err.message);
+    return res.set(MISSION_HEADER).json({ sport, byPlayer: {} });
+  }
+});
+
 router.get('/:sport', async (req, res) => {
   const sport = String(req.params.sport || '').toLowerCase();
   const date = req.query.date || scheduleService.todayET();